Tennessee history

Dr. Eirug Davies describes himself as a physicist who tried to retire. Now he teaches in the Celtic Department at Harvard University and is a preeminent researcher on the history of Welsh populations and Welsh language in the US. Davies says the first great influx of Welsh immigrants was in the 1830's, mostly to coal-mining towns in Pennsylvania. Davies was in Knoxville and spoke to WUOT's Morning Edition host Chrissy Keuper about some Tennessee connections to his research: Knoxville, Lake City(once called Coal Creek) and a man named David Thomas.